Lannie ordered 12 copies of the same book for his book club members. the book cost $19 each and the order has a$15 shipping charge. what is the total cost of lannies

Twelve copies cost 12×$19 and another $15 to ship for a total of

12×19 + 15 = 12×(20 -1) + 15 = 240 + 3 = 243

$243

see explanation

step-by-step explanation:

since the sequence is geometric there is a common ratio r between consecutive terms, that is

r = 4 ÷ - 2 = - 2

r = - 8 ÷ 4 = - 2

r = 16 ÷ 8 = - 2

the next term - 13 must be incorrect as it should be - 32 for the sequence to be geometric.

the first 4 terms are therefore geometric with common ratio r = - 2

i dont know sorry

step-by-step explanation: